docs(13-04): complete plan — visual verification approved, phase 13 done

- Task 3 visual verification approved by user
- SUMMARY.md updated to reflect all 3 tasks complete
- STATE.md updated: phase 13 complete, 100% progress
- ROADMAP.md updated: phase 13 all 4 plans complete

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.planning/phases/13-add-remaining-rclone-remotes/13-04-SUMMARY.md

@@ -58,7 +58,7 @@ completed: 2026-04-01
 - **Duration:** ~15 min
 - **Started:** 2026-04-01T16:50:00Z
 - **Completed:** 2026-04-01T17:00:00Z
-- **Tasks:** 2 of 3 (Task 3 is human visual verification checkpoint)
+- **Tasks:** 3 of 3
 - **Files modified:** 2
 
 ## Accomplishments
@@ -76,7 +76,7 @@ Each task was committed atomically:
 
 1. **Task 1: Wire all new backends into RemoteConfigStep** - `d0c00f7` (feat)
 2. **Task 2: Add tests for new backend form rendering** - `2c596c9` (test)
-3. **Task 3: Visual verification** - awaiting human checkpoint
+3. **Task 3: Visual verification** - approved by user (2026-04-01)
 
 ## Files Created/Modified
 - `src/components/wizard/RemoteConfigStep.tsx` - Refactored with switch-based renderBackendFields(), registry-derived backendLabel, imports for GdriveAuthToggle and OAuthInstructions
@@ -111,9 +111,9 @@ None beyond the test selector adjustment documented above.
 None - no external service configuration required.
 
 ## Next Phase Readiness
-- Tasks 1 and 2 complete: all 18 backends render correct forms
-- Task 3 (visual verification) awaiting human approval
-- Once approved, Phase 13 is fully complete — all 18 backends functional end-to-end
+- All 3 tasks complete: all 18 backends render correct forms
+- Task 3 (visual verification) approved by user
+- Phase 13 is fully complete — all 18 backends functional end-to-end
 
 ---
 *Phase: 13-add-remaining-rclone-remotes*